if there is indeed a English only and a multi language version they would have different Title ID's and as such would show up on the menu separately, if this is the case then dumping your titlekeys and sharing the multi language title key would be enough for people to get the multi language version

I guess its possible for games with heavy talking that they may indeed release eshop versions for each language rather than multi language to save space for people, while the retail cart would just be all languages built in

if there is indeed a English only and a multi language version they would have different Title ID's and as such would show up on the menu separately, if this is the case then dumping your titlekeys and sharing the multi language title key would be enough for people to get the multi language version